2019
DOI: 10.3390/atmos10070404
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Parallelization Performances of PMSS Flow and Dispersion Modeling System over a Huge Urban Area

Abstract: The use of modeling as a support tool for crisis management and decision planning requires fast simulations in complex built-up areas. The Parallel Micro SWIFT SPRAY (PMSS) modeling system offers a tradeoff between accuracy and fast calculations, while retaining the capability to model buildings at high resolution in three dimensions. PMSS has been applied to actual areas of responsibilities of emergency teams during the EMERGENCIES (very high rEsolution eMERGEncy simulatioN for citIES) and EMED (Emergencies f… Show more

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Cited by 14 publications
(6 citation statements)
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“…The PMSS modeling system [17,[19][20][21] is a parallelized flow and dispersion modeling system. It is constituted of the Parallel-SWIFT (PSWIFT) flow model and the Parallel-SPRAY (PSPRAY), an LPDM, both used in small-scale urban mode.…”
Section: The Modeling Systemmentioning
confidence: 99%
See 1 more Smart Citation
“…The PMSS modeling system [17,[19][20][21] is a parallelized flow and dispersion modeling system. It is constituted of the Parallel-SWIFT (PSWIFT) flow model and the Parallel-SPRAY (PSPRAY), an LPDM, both used in small-scale urban mode.…”
Section: The Modeling Systemmentioning
confidence: 99%
“…The PMSS modeling system has been validated both in scalar mode [22,26,27] and regarding parallel algorithms [17,20]. The parallel testing was performed in computational environments ranging from a multicore laptop to several hundred cores in a highperformance computing center.…”
Section: Scalabilitymentioning
confidence: 99%
“…PMSS modelling system has been thoroughly validated against wind tunnel and full-scale experimental results [29,30]. The parallelism was shown to be very efficient, from a multicore laptop up to clusters with several hundreds or thousands of cores in the case of a high-performance computing center [31,32]. In terms of computational time, to give an order of magnitude considering a spatial domain of 1 km 3 with a horizontal and vertical (close to the ground) resolution of 2 meters, PMSS computational time is around 5 minutes for the flow and 10 more minutes for tracking a plume for 15 minutes using an optimal number of cores on a standard work station.…”
Section: Synthetic Data and Cfd Simulationmentioning
confidence: 99%
“…The PMSS modeling system (see [17][18][19][20]) has been used to model the flow and dispersion on domain with extension of several tens of kilometers and horizontal grid resolution of 3 m. The modeling system consists of the individual PSWIFT and PSPRAY models. The PSWIFT model [21][22][23][24] is a flow and turbulence parallel, 3D, mass-consistent, and terrain-following diagnostic model that uses a Röckle-type [25] approach to take into account buildings.…”
Section: Modeling and Computing Capabilitiesmentioning
confidence: 99%